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Finding the Fourth Proportional to 133.98, 185.00 and 84.98

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Solution

The fourth proportional to 133.98, 185.00 and 84.98 is: 117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.98 : 185.00 = 84.98 : x
  2. Step 2: Convert to fraction form
    133.98/185.00 = 84.98/x
  3. Step 3: Cross multiply
    133.98x = 185.00 × 84.98
  4. Step 4: Simplify right side
    133.98x = 15,719.95
  5. Step 5: Solve for x
    x = 15,719.95/133.98
  6. Step 6: Final answer
    x = 117.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.